Pump.



No. 676,7l4. Patented lune l8, 190i.

W. G. FETRUW.

P U M P (Application filed Sept. 10, 1900.)

(N0 Modal.)

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WITNESSES 5 a l BY W ATTORNEYS m: NORRIS PETERS co. F'HOYO-LIYHOvwAsumcwu, u. r:

Uivrrnn STATES PATENT Urrrcn.

\VILLIAM G. FETROW, OF MEOHANICSBURG, PENNSYLVANIA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 676,714, dated June 18,1901. Application filed September 10. 1900; Serial No. 29,532. (Nomodel.)

To all whom, it may concern:

Be it known that I, WILLIAM G. Fnrnow, a citizen of the United States,and a resident of Mechanicsburg, in the county of Cumberland and Stateof Pennsylvania, have invented a new and Improved Pump,of which thefollowing is a full, clear, and exact description.

The invention relates to double-cylinder force-pumps; and its object isto provide a new and improved pump which is simple and durable inconstruction, very effective in operation, and arranged to work both inshallow and deep wells, including Artesian wells.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews;

Figure 1 is a sectional side elevation of the improvement. Fig. 2 is asectional plan view of the same on the line 2 2 in Fig. l, and Fig. 8 isa like view of the same on the line 3 3 in Fig. 1.

The improved pump has two alined cylin ders A and B, located one abovethe other, and has valved plungers C and D operating in unison with eachother in said cylinders, the plungers being secured for the purpose on asingle plunger-rod E, receiving an up-and-down movement by suitablemechanism at the top of the well. The adjacent ends of the cylinders Aand B are secured to the bottom and top of a valve-holder F, havingseats and formed in its side wall with openings F and also formed withvertical passages F as is plainly shown in Figs. 1 and 3. On the seat atthe bottom of the valve-holder F is normally seated a valve G, and avalve H engages the seat at the top of the valve-holder, as is plainlyshown in Fig. 1, and the stems of the two valves G and H are connectedwith each other by a coilspring I, normally'holddug the valves to theirseats, but allowing either of the valves to open into the correspondingcylinder A or B.

The lower cylinder A is surrounded by a casing part J, closed at thebottom and into which opens the lower end of the cylinder A,

said casing part J forming with the cylinder A an annular space openingat its upper end to the vertical passages F in the valve-holder F. Acasing part K surrounds the upper cylinder B and forms with the latter aspace opening at the lower end to the top of the passages F and openingat its upper end at the discharge-pipe L, secured to the top of thecasing part K. The upper open end of the cylinder B opens into the upperend of the casing K, as will be readily understood by reference toFig. 1. l

The annular spaces above mentioned and the passages F in thevalve-holder form a continuous discharge-chamber for the lower end ofthe cylinder A, so that the water in the said cylinder on the downstrokeof the plun ger 0 passes up the said discharge-chamber to thedischarge-pipe L, and water lifted by the plunger D on the upstrokethereof is caused to pass from the upper end of the cylinder B to thedischarge-pipe L.

The casing parts J and K are secured to the top and bottom of thevalve-holder F, and the latter, as well as the casing part J, issurrounded by a shell N, carrying at its lower end a head 0, to which isconnected an apertured suction-pipe P. A screw Q screws in the head 0against the lower closed end of the casing part J to fasten the severalparts together and in position, as shown in Fig. 1, it being understoodthat the upper end of the shell N is formed with an inwardly extendingflange N, resting on an outwardly extending flange K, formed on thelower end of the casing part K.

The operation is as follows: On the downstroke of the plnngers D and Gthe water contained in the lower end of the cylinder A is forced outthrough the discharge-chamber to the discharge-pipe L, as previouslymentioned, and at the same timewateris drawn into the upper part of thiscylinder A by means of the valve-holder F and the suctionchamber formedbetween the valve-holder, the casing part J, and the shell N. During thedownstroke of the plunger D the water previously drawn into the lowerend of the cylinder B passes through the valve in said plunger to theupper part of the cylinder, and on the upstroke of this plunger thewater in the upper part of the cylinder B is thereof.

forced up through the discharge-pipe L. During the upstroke of theplunger C the water previously drawn into the upper end of the cylinderA passes through the plungervalve to the lower part of the cylinder A tobe forced out therefrom on the next downward stroke of the plunger 0.

Thus from the foregoing it will be seen that a very effectivedouble-cylinder force-pump is provided which works equally well inshallow or deep wells, including Artesian wells. As the pump is composedof but few parts it is evident that it is not liable to get out oforder, but can be readily repaired whenever necessary.

Various changes may be made in my invention without departing from theprinciple Hence I consider myself entitled to all such variations ascome within the scope of the claims.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent-- 1. A pump, comprising alined upper and lowercylinders, valved plungers operating in unison in said cylinders, avalve-holder arranged between the cylinders and provided withvalve-seats, valves on said seats and opening into the respectivecylinders, a discharge-chamber for the lower cylinder and opening intothe discharge of the upper cylinder, and a suction-chamber for thewater, the said suction-chamber comprising a shell surrounding thedischarge-chamber of the lower cylinder, and the valve-holder, anddischarging into the valve-holder between the upper and lowervalve-seats to supply both cylinders with water, as set forth.

2. A pump, comprising alined upper and lower cylinders, valved plungersoperating in unison in said cylinders, a valve-holder between saidcylinders and having an upper and a lower valve-seat, valves on the saidseats and opening into said cylinders, a dischargechamber for the lowercylinder comprising a lower portion surrounding the lower cylinder andan upper portion connected by passages with the lower portion, the saidupper portion of the discharge-chamber surrounding the upper cylinderand opening into the discharge of said upper chamber, a suctionchamberfor the water, said suction-chamber surrounding the discharge-chamber ofthe lowercylinderand the valve-holder and opening into the valve-holderbetween the upper and lower valves to supply both cylinders with water,and a spring connecting the said upper and lower valves with each otherto normally hold the same to their seats, as set forth.

3. A pump, comprising alined upper and lower cylinders, valved plungersoperating in unison in said cylinders, a valve-holder arranged betweensaid cylinders, and having an upper and a lower valve-seat, the saidholder being provided with vertical passages, valves on said seats andopeninginto the respective cylinders, a discharge-chamber for the lowercylinder and opening into thedischarge of the upper cylinder, the saiddischarge-chamber comprising a lower portion, closed at the bottom andextending around the lower cylinder, and an upperportion extendingaround the upper cylinder, the said upper and lower portions of thedischarge-chamber being connected by the vertical passages extendingthrough the valve-holder,and a suction-chamber for the water, the saidsuction-chamber surrounding the discharge-chamber of the lower cylinderand the said valve-holder, and

opening into the valve-holder between the upper and lower valve-seats tosupply both cylinders with water, as set fortln lower cylinders,valvedplungers operating in unison therein, a valve-holder provided withvalve-seats, and having side openings and vertical passages forming partofa dischargechamber, valves on said valve-seats and opening into saidcylinders, a lower casing part surrounding the lower cylinder andforming with the latter an annular space in communication with the lowerend of the lower cylinder and in communication with the passages in thevalve-holder, an upper casing part surrounding the upper cylinder andforming with the latter an annular space opening to the saidvalve-holder passages, the latter and said annular spaces forming acontinuous discharge-chamber for the lower cylinder and the upper end ofthe chamber leading to the pump-discharge pipe, and a shell surroundingthe valve-holder and said lower casing part to form a suction-chamberdischarging into the side openings of the said valve-holder, as setforth.

5. A pump, comprising alined upper and lower cylinders, valved plungersoperating in unison therein, a valve-holder provided with valve-seats,and having side openings and vertical passages forming part of adischarge-chamber, valves on said valve-seats and opening into saidcylinders, a lower casing part surrounding the lower cylinder andforming with the latter an annular space in communication with the lowerend of the lower cylinder and in communication with the passages in thevalve-holder, an upper casing part surrounding the upper cylinder andforming with the latter an annular space opening to the saidvalve-holder passages, the latter and said annular space forming acontinuous discharge-chamber for the lower cylinder and the upper end ofthe chamber leading to the pump-discharge pipe, a shell surrounding thevalve-holder and said lower casing part to. form a suction-chamberdischarging into the side openings of the said per end of the uppercasing part and into which opens the upper end of the upper cyl inderand the upper end of the said dischargechamber, as set forth.

6. A pump, comprising alined upper and valve-holder, and adischarge-pipe on the upat. A pump, comprising alined upper and lowercylinders, valved pluugers operating in unison therein, a valve-holderprovided with valve-seats, and having side openings and verticalpassages forming part of a discharge-chamber, valves on said valve-seatsand opening into said cylinders, a lower casing part surrounding thelower cylinder and forming with the latter an annular space incommunication with the lower end of the lower cylinder and incommunication with the passages in the valve-holder, an upper casingpart surrounding the upper cylinder and forming with the latter anannular space opening to said valve-holder passages, the latter and saidannular spaces forming a con tinuous discharge-chamber for the lowercylinder and the upper end of the chamber leading to the pump-dischargepipe, a shell surrounding the valve-holder and said lower casing part,to form a suction-chamber discharging into the side openings of the saidvalve-holder, a discharge-pipe on the upper end of the upper casing partand into which opens the upper end of the upper cylinder and the upperend of the said dischargeehamber, and a suction-head on the lower end ofthe said shell, to connect with the suction-pipe, as set forth.

7. A pump having an upper and a lower cylinder, casings surrounding thecylinders and forming therewith annular spaces, a valve-holder arrangedbetween the cylinders and having top and bottom valve-seats, the saidvalve-holder being provided with side openings leading to the interiorof the valve holder between the seats and upward passages in the sidewalls of the holder and connecting the annular spaces surrounding thecylinders, as set forth. I

8. A pump having upper and lower cylinders, a casing surrounding thelower cylinder and closed at the bottom, the casing forming with thesaid cylinder an annular space communicating with the lower end of thecylinder, a casing surrounding the upper cylinder and forming with thelatter an annular space communicating with the discharge of the uppereylinder,a valve-holder arranged between the cylinders and connectedtherewith and with the said casings, the said valve-holder having topand bottom seats, side openings leading to the said seats, and upwardpassages in the side walls connecting the annuspring surrounding thestems of said valves and connecting them with each other, as set forth.

10. A pump, comprising alined upper and lower cylinders, valved plungersoperating in unison in said cylinders, a valve-holder between saidcylinders and provided with valve-seats, the said holder having sideopenings and vertical passages, valves on said seats and opening intothe respective cylinders, a casing surrounding the lower cylinder andspaced therefrom, the said casing being closed at its lower end, acasing surrounding the upper eylinder and spaced therefrom, the spacebetween the lower cylinder and its casing communicating with the openlower end of said cylinder, and the space between the upper cylinder andits casingcommunicating with the pump-discharge pipe, the said cylindersand casings being secured to the said valve-holder and the said spacesformed by the cylinders and casings being connected with each other bythe passages through the said valve-holder, a shell sur-' rounding thelower casing and the valveholder to form a suction-chamber discharginginto the side openings of the valve-holder, the said shell being formedat its upper end with a flange resting on a corresponding flange on thelower end of the upper casing, a suction-head on the lower end of theshell and connected with a suction-pipe, and a screw carried by the saidsuction-head and engaging the lower closed end of the lower casing, asset forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM G. FETROXV.

Witnesses:

BAILEY Mnnonn, II. ll. MERcEa.

